Implement NIP-98 authentication for HTTP requests, enhancing security for event export and import functionalities. Update server methods to validate authentication and permissions, and refactor event handling in the Svelte app to support new export and import features. Add UI components for exporting and importing events with appropriate permission checks.

app/web.go

@@ -17,3 +17,9 @@ func GetReactAppFS() http.FileSystem {
 	}
 	return http.FS(webDist)
 }
+
+// ServeEmbeddedWeb serves the embedded web application
+func ServeEmbeddedWeb(w http.ResponseWriter, r *http.Request) {
+	// Serve the embedded web app
+	http.FileServer(GetReactAppFS()).ServeHTTP(w, r)
+}